Molding apparatus.



H. L. DBMMLBR. MOLDING APPARATUS. APPLIGATION FILED AUG. l, 1907.

910,651. Patented @11.26, 1909.

HENRY L. DEMMLER, OF WEATHERSFIELD, ILLINOIS.

MOLDING APPARATUS.

Specification of Letters Patent.

Patented Jan. 2e, 1909.

Application led August 1, 1907. Serial No. 386,570.

To all'whom it may concern:

Be 1t known that I, HENRY L. DEMMLER,

`a citizen of the United States,A residing at Weathersfleld, in the county of Henry and State of Illinois, have invented certain new and useful Improvements in Molding Apparatus, of which the following is a specification,

reference being had therein tothe accom 'panying drawing.

My invention refers to improvements in molding' apparatus of the class wherein mechamsm is provided for vibrating the flask I to pack the sand around the pattern, and refers particularly to -the means for automatic ally holding: the pattern on the stripping late during the vlbration` and for releasing 1t at the termination thereof, together with Y other features ofinvention as shall be more fully hereinafter described.

The present invention constitutes an iin-- Vrovement on the construction shown and escribed in my co-p'ending application filed March 21,1 907, bearing the Serial No. 363,653.

Referring `to the drawings: Figure 1 is a view of the a paratus in side elevation. Fig. 2 is a deta' vertical sectional view on the line II. II. of Fig. 1. Fig. 3 is a plan view of Fig. 1. Fig. 4vis a horizontal sectional view on the une iv. 1v. of Fig. 1. Fi 5 is a Similar sectional view on the line V. of Fig. 2. Fig. 6 is a sectional detail view showing a vvmodilied construction.

Generally stated, the apparatus comprises a cylinder provided with a piston and an automatieally controlled inlet and outlet valve,

a superimposed base plate or frame, a verti- .any'suitable supporting base 4, with an intervenmg adjusting wedge or wedges 5. 6 isa base plate rigidly mounted shghtly above the top of the cylinder 2 on any suitable supporting structure so as to form a pert manent stationary portion of the ap aratus, said base plate being rovided with? a centrally arranged upwardly rejecting case 7 in which is mounted the hollow reci rocating platen 8. Said platen S is provi ed at its upper portion' with a .flat table extension 9 or is otherwise suitably designed for the purpose of supporting and carrying the stri ping plate 10, and isalso provided with (ownwardly extendinglegs 11, 11, ofany suitable construction, which legs project downwardly from the` central body portion 8 through guiding apertures 12 in an intervening base plate 13. Said base plate may however, be formed integral with the case 7 if desired, or constructed in anyI other suitable manner whereby to provide aguiding support for the said legs.

`14 is a block of wood er other suitable cushioning material designed to absorb the shock of impact, set within a suitable receiving cavity in the under portion of the transverse bridge 15 integral with platen 8 as shown in Fig. 2, adapted to normally rest upon the plate 13. v f

The stripping plate 10 is designed to be lifted by the u per surface of the )laten table 9, and to e held independent thereof by means of lifting pins or studs 16, eXtending upwardly from vertically sliding yokes 17 mounted in vertical guide-ways 18 in the sides of the shell or frame 7, or by other suitable means projecting upwardly from said easing, and preferably at each opposite side thereof. For the purpose' of lifting the front late' 10 by said means I provide a double ever 19 extending along each opposite side of the frame 7 mounted upon pivotal bearing 20 and having the connected ends 21.

22 is a cylinder containing a piston provided with a piston rod 23..projecting up underneath cross-arm 21, by which, through levers 19, the yokes 1'7 and studs 16 are raised to lift the stri ping plate. By such construction it wil be seen that fluid pressure being exerted against the back of the said piston in cylinder 22, levers 19 will be raised, ifting yoke 17 and pins. 16, thus raising the plate -10 to its desired inoperative position which may be slightly above the upper surface of platen table 9, iand at its lowermost position as shown in F1g. 1.

24 is a vertically reciprocating piston mountedin cylinder 2 by which impact is imparted to the and thence top te 10 and yiask thereon upon piston 24 coming into contact with the 5 lower terminals of the platen legs.- The said iston is provided with a suitable ring around lts ext'erlor periphery for the purpose of making a fluid tight joint withinthe cylinder. In the piston 24 is an exhaust valve 25 seated u wardly against the under side of the piston W ich is provided with acorrespondlng valve seat 26 and an inner opening through which opening projects the upper middle body portion 27 o the exhaust va ve 25. -Said upwardly projecting portion 27 of .corresponding series of vertically arrangedy under side of the base plate 13.

the' exhaust valve is preferably provided with a series of annularly arranged guiding ribs 28 bearing within against the walls ofthe piston apertures, and between said ribs 28 are a annular yrecesses for the urpose of permitting the exhaust of the li ting fluid from beat the up er portion of the valve chamber and an 1n et opening 34 leading from said chamber upwardly into the interior of cylinder 2, through which projects an upper relduced te'rminal stem 35 of valve 30.

36 is an inlet port leading from any suitable source of pressure supply as by pipe 37, which may be controlled by any convenient valve mechanism, to supply the energizing ressure. Port 36 is so located thatit will be 'uncovered by piston 30 when in its lowermost position as shown in Fig.` 2, but.will be covered, shutting ofi' the sup ly of said valve 30, when it is raised. For t e purpose of lifting valve 30 I provide a spring 38 `which may b'e conveniently made in the form' of a coiled spring set Within a central cavity in valve 30 bearing downwardly against base plate 4, tending to normally raise the valve 30 t.o.., eut off the supply of actuating fluid.

' The interior central upper portion of platen 8 is hollow as shown' at 39, constitutlng a cylinder closed at the top by any suitable head 40.' Within said cyllnderis mounted a piston 41 bearing downwardly upon a transversely arranged bar 42 extending through the platen from side to side and outwardly beyond the casing 7 through suitable.

slots therein. 43 is a transverselyarranged Iplaten' 8 through. legs 11,

.in the form of a flexible hose orothersuitstri infr late 1'0 when said levers are drawn PP s) downwar ly. For the pur ose vof so drawing said levers down and c amping the pattern to the stripping plate, the levers are provided with fiange abutments 51,- or any other suitable connected means adapted to be engaged by the upper terminals of the bolts or rods 52 extending downwardlythrough table 9, and connected as by nuts 5.3 on v their threaded extremities, with the ,terminals 54 of said bar 42.- g

The up er interior of cylinder 39 is provided w1t a pipe 55, which is preferably able connection with the main su ly'37,' whereby oylinde'r'39 is supplied wnifi pressure simultaneously wrt the supply to the valve chamber underneath piston 24 said i The resulting .effect of such pressure uponpiston 41 is that it depresses bar 42 downwardly, drawing the clamping extremities 48 upon the flange of the flask,` thereby rigidly maintaining thefiask in'position upon the stripping plate as the vibration of the platen continues. Upon cutting off the pressure to cylinder 2, pressure is likewise cut off from cylinder 39, thereby effecting the releasing of the pattern by the opening of the clamps 28, whereuponit may be removed. So long -'as pressure is supplied to both pipes a series of quickhintermittent reciprocations will be imi parted to theplaten and the y the plate v10.

In Fig. 6 I show'a modified construction of the valve casing and its supporting base in!V which the base 4 is provided .with an extension 56 screwed upwardly intothe base 3 ofthe valve casing. The interior 31 of exten- -sion 56 may be finished ofthe same diameter as the upper interior 3 of the valve casing, or

-the valve may bemounted to :fit anid'move in the extension 56 only, providing a recess for the valve 30 and its spring 38." By this construction and arrangement the valve is mounted in and'remoVable---with the cylini l drical extension of the base, and either construction may be used with .good results. By this .construction the base 4 is rigidly connected with the lower portion of the istpn cylinder and its valve-'receiving portion',` while the parts may be readily taken apart,

ilasksupported the operation being ,the same as already dechamber vibrating cylinder, substantially as scribed. The operation of' the invention will be readily understood from the foregoing de` scription. The apparatus is exceedingly simple'in construction, the working parts are few and not vides for all the contingencies arising in the use of mechanism of this class, and for automatically clamping and releasing of the pattern flask at times correspondin with the operation and'succession of the vi ration.

The particular features or elements of the Vinvention whereby the platen is connected z may be employed in combination with other or different vibrating means and the machine may be changed or varied by the skilled mechanic in different details, design -or other features, and I do not desire to be limited to the exact construction shown and described. `What I claim is:

, 1. In a molding apparatus, the combination with a reciprocatingplaten embodying a cylinder, of a fluid-controlled piston therein,

and means operatively connected with theV piston for clamping a superimposed member, to the platen, substantially as set forth.

2. In a molding apparatus, the combination with a reciprocating platen embodyin a cylinder, of .a fluid-controlled piston therem, and means'operatively connected with the piston for clamping a flaskon the platen, substantially as setforth.

3. `In a molding apparatus, the combination with a reciprocating platen embodyin a cylinder, of a fluid controlled piston therein, means operatively connected with the piston for clamping a flask on the platen, and means for retracting the piston to loosen the flask upon releasingthe fluid pressure on the piston, substantially as set forth.

,4. In amolding apparatus, the combination with the vibrating platen and an actuating cylinder and piston provided with a fluid supply, of means incorporated with the platen for clamping a flask thereon Iarranged to tighten or loosen it simultaneously withv the operation ofthe vibrating mechanism..

5. In a molding apparatus, the combination with a fluid-actuated vibrating element, of a vibrated platen, means incorporated therewith for clamping the pattern thereto, and Aactuating means therefor arranged for operation simultaneously with the vi rating mechanism, substantially as set forth.

6. '.lhe combination with a fluid controlled cylinder and a piston therein, of a vertical platen provide with an interior piston chamber and piston, clamping mechanism adapted to be o erated by said latter piston anda-fluid supplfy connection for said piston liable to get out of order;l it pro- .inder and actuatincg 8.v The combination with avibratingplaten embodying a cylinder, a piston, an

'p1votally mounted clamping jaws; of actuating means connected with said piston land with the clamping jaws, and means for su plying fluid pressure tothe cylinder, su stantially 'as set forth.

9. l he combination of a superimposed reciprocating platen, a cylinder having a spring-controllec'l inlet valve, a pistonin the cylin er adapted to make abutting contact upwardly a ainst the platen and provided with a chec valve adapted to co-act with they valve of the cylinder, and adjusting devices located beneath the cylinder whereby it and its piston may be vertical-ly adjusted with relation tov set forth. l

10. 'Ihe combination of a casing and a reciprocatable platen mounted therein, of lifting rods mountedat each side of the casing and extending upwardly through the top of the platen, similarly arrangedyokes engaging underneath the rods, a double-sided ivthe platen, substantially as o ted lever, and a cylinder provided Wit a piston arranged to actuate said lever, substantially as set forth. Y

11. In molding apparatus, the combination vwith a vibrating platen, and a main cylpiston therein, of fluidapted to hold a flask dureriod of vibrationand to release it when vi ration ceases', and means for adjusting said main cylinderl with relation to the plat-en, substantially as set forth.

12. In a molding apparatus, the combination with a vibrating platen, a cylinder and a controlled means a ing the hold and release a flask, means for a justing said cylinder vertically, a stripping plate, adjustable lifting rods for the strip lng plate, yokes connected with saidrods, t e doublesided pivoted lever, and the lifting cylinder, substantially as set forth.

lIn testimony whereof I aflix in presence of two witnesses.

HENRY'L. DEMMLER.

my signature Witnesses:

C. M. CLARKE, CHAs. S. LEPLEY.

. piston; of fluid-controlled means ada ted to 

